Seeder and cultivator tooth.



No. 663,7l7'.

. Patented Feb. 26, |90I. J. S. & T. B. RDWELL. SEEDER AN-D CULTIVATORTOOTH.

@unanimi mea me. 24, 1906.)

(no Model.)

UNiTnD STATES PATENT rricn.

JOHN S. ROWELL AND THEODORE B. ROWELL, OF BEAVER DAM,

l WISCONSIN.

SEEDER AND CULTIVATOR TOOTH.

SPECIFICATION formingpart of Letters Patent No. 668,717, dated February26, 1901.

Application filed December 24, 1900. Serial No. 40,838. (No model.)

To all whom t may concern:

Be it known that we, .IOHN S. ROWELL and THEODORE B. ROWELL, citizens ofthe United States, and residents of Beaver Dam, in the county of Dodgeand State of Wisconsin, have invented cert-ain new and usefulImprovements in Seeder and Gultivator Teeth; and we do hereby declarethat the. following is a full, clear, and exact description thereof.

Our invention has for its object to provide simple, economical, anddurable spring-trip seeder and cultivator teeth, said inventionconsisting in certain advantageous peculiarities of construction andcombination of parts hereinafter particularly set forth with referenceto the accompanying drawings and subsequently claimed.

Figure 1 of the drawings represents a partlysectional side elevation ofa spring-trip tooth in accordance with our invention, the trip of thetooth being illustrated by dotted lines in this figure; Fig. 2, a detailsectional view on the plane indicated by line 2 2 in the first ligure;Fig. 3, a perspective view of an anglebracket -that partly constitutesthe upper or beam section of a jointed shank for the toothpoint; Fig. 4,a similar view of a portion of the point-section of said shank, and Fig.5 a like view of a toggle employed in connection with the shank-sectionsand provided with a set-screw adjustable against one of saidshank-sections to regulate tension of a cornpression-sprin g on a rodshackled tothe toggle.

Referring by letter to the drawings, A indicates each of a pair of flatmetal bars that are set edgewise and connected together to form adraft-beam. Bolted between the beambars at their rear ends is ahorizontal arm B of an angle-bracket having a depending vertical arni C,provided with an apertured enlargement b near its intersection with theformer arm, said angle-bracket being prefer` ably malleable iron andmade with upper vertical and horizontal flanges c d, abutting therealextremities and lower edges of the beambars A aforesaid. Theangle-bracket is also made with a rearwardly-extending upper lug e, towhich the upper ends of a pair of parallel links D are pivotallyconnected, the lower ends of these links being likewise connected to theupper extremity of a forked block E, that is also preferably malleableiron and made with an enlargementf, having athreaded aperture engaged bya set-screw F, said links and block consiituting a toggle.

The arm B of the angle-bracket constitutes the upper section of a shankfora tooth-point G, the other section H of the shank being inbolt-and-nut connection with the point and pivotally engaged at theupper end with the forked lower portion of said bracket-arm.

The lower shank-section is provided with an l upperlug g, that haspivotal engagement with the forked lower portion of block E,constituting part of the above-described toggle, the set-screw F of saidtoggle being impinged against the rear edge of the upper or beam sectionof the shank. By providing lng g with a plurality of apertures, as isherein shown, the normal set of the tooth-point may be varied.

A rod I is shown as having an end eye h engaged by a bolt i, thatextends thro-ugh apertures made in links D, above specified, and thisrod in shackle connection with the aforesaid toggle has play in theaperture with which the enlargement b of arm B of the angle-bracket4 orbeam-section of the jointed point-shank is provided. A spiral `spring Jis arranged on the rod to be compressed between the aforesaid arm and awasher K, a radial branchj of this Washer being extended up between thebeam-bars A, set forth in the foregoing. The forward end of rod I isscrewthreaded and has a nut L run thereon against the aforesaid washer,the normal tension of spring J being regulated by adjustment ofset-screw F, hereinbefore specied.

When the tooth-point G meets obstructions of more than ordinaryresistance in its path, it will yield with the toggle-joint in arearward direction,there being proportionate compression of spring J,this operation bei ng illustrated by dotted lines in Fig. 1. Theobstruction having been passed, there will be expansion of spring J andautomatic return of the tooth-point and toggle-joint to their normalpositions. Incidental to an automatic trip and recovery of thetooth-point the radial branch j of washer K will have play between thebeamarms A to clear away possible accumulations of trash, such as grassand weeds.

IOO

From the foregoing it will be particularly observed that rod I andspring J are close under the draft-beam out of the way and directly overthe center of tooth-point G, this being an advantageous arrangement.

Thile we have shown a preferred construction and arrangement of parts,the same may be more or less varied in practice without departure fromour invention in its broadest terms.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

l. The combination ofadraft-beam,ajoint ed point-shank in dependingrigid connection with the beam, a rear toggle connecting the point-shanksection s,a rod that being shackled to the toggle extends through anaperture in the upper one of said shank-sections, and a Spiral springheld on the rod to have its rear end abut said upper shank-section.

2. The combination ofa draft-beam, ajointed point-shank in dependingrigid connection with the beam, a rear toggle connecting thepoint-shanksections,a rod that beingshackled to the toggle extendsthrough an aperture in the upper shank-section, a spiral spring held onthe rod to have its rear end abut said uppel shank-section, and meansfor regulating normal tension of the spring.

3. The combination ofadraft-beam,ajoint ed point-shank in dependingrigid connection with the beam, a rear toggle connecting the point-shank sections,a rod that bei ng shackled to the toggle extends through anaperture in the upper shank-section, a spiral spring held on the rod toabut said upper shank-section, and a set-screw adjustable in a sectionof the toggle against the aforesaid upper shan k-section.

4. The combination of a draft-beam comprising a pair of flat bars setedgewise, an angle-bracket having a horizontal arm made fast between thebeam-bars and a depending arm constitutingpartofajointed point-shank, arear toggle in connection with rear lugs of the bracket and lowerpoint-shank section',

a setscrew adjustable in a toggle-section against the depending arm ofthe bracket, a rod that being in shackle connection with the toggleextends through an aperture in said depending bracket-arm, and a spiralspring held on the rod to abut the aforesaid depending bracketarm.

5. The combination of a draft-beam comprising a pair of flat bars setedgewise, a jointed point-shank the uppersection of which is a dependingarm of an angle-bracket made fast between the beam-bars, a rear toggleconnecting the point-shank sections, a rod that being shackled to thetoggle extends through an aperture in said upper point-shank section, awasher facing a nut on the forward end of the rod and having a radialbranch extending up between said beam-bars, and a spiral spring arrangedintermediate of the washer and aforesaid upper point-shank section.

The combination of a draft-beam comprising a pair of fiat bars setedgewise, a jointed point-shank the uppersection of which is a dependingarm of an angle-bracket made fast between the beam-bars, a rear toggleconnecting the point-shank sections, a rod that being shackled to thetoggle extends through an aperture in said upper point-shank section, awasher facing a nut on the forward end of the rod and having a radialbranch extending up between said beam-bars, a spring arrangedintermediate of the washer and aforesaid upper point-shank section, andmeans for adjusting said toggle to regulate normal tension of thespring.

In testimony that we claim the foregoing we have hereunto set our hands,at Beaver Dam, in the county of Dodge and State of Visconsin, in thepresence of two witnesses.

JOHN S. ROVVELL. THEODORE B. ROWULL.

Witnesses:

L. W. BARBER, B. S. BARBER.

